Whether they're trying to find a panda, a dog or a bunch of hidden tigers, the internet can't seem to get enough of puzzles that test their eagle eyes. While these types of challenges are probably in greater demand than they've ever been, that doesn't mean they're a new phenomenon.
Of course, you can arguably find examples of optical illusions as early as the stone age, but even the camouflage puzzles we see picking up popularity today have already been on the scene for years. To demonstrate that, we've looked back and found a painting from 1979 that wouldn't seem out of place in the current crop of I Spy games.
This time, you need to find all the horses in the picture.
COMMENT and tell us how many you saw at first.

Here we see some colorful pintos on a snowy mountain.

The question is, how many of them are there?

via ArtUSA Bev Doolittle

At first, this may seem kind of insulting.

Counting horses is something you mastered by kindergarten, so why is this such a big challenge?

via Giphy NBC

These horses blend in pretty well with the background, though.

So counting them becomes harder if you're left wondering whether you're looking at a rock or a horse's back.
These horses blend in pretty well with the background, though.
via reddit / [deleted] 20th Century Fox

While you're figuring it out, let's learn a little about the artist.

Bev Doolittle is well-known for painting horses in camouflage but is also passionate about natural scenes and often depicts the spiritual connection to nature she observes in Native Americans.

So what's with the horses?

She saw a group of horses in a meadow and was fascinated by how they seemed to study her. So she thought of making them pintos and blending into a rocky mountain so they could observe you before you noticed them.

By now, you may feel pretty confident that you've found all the horses.

Still, it doesn't hurt to double-check. Not only do they fade into the background, but they're also kind of blocking each other.
By now, you may feel pretty confident that you've found all the horses.
via Giphy GQ

Here's your chance to check your answer.

It turns out there are five horses. Some of you might think you see more, but all of the horse heads are in the shot and there are only five of those.

via ArtUSA Bev Doolittle